<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>登录页面</title>
    <link rel="stylesheet" href="css/login.css">
    <link rel="stylesheet" href="css/common.css">
</head>
<body>
    <!-- 导航栏 -->
    <div class="nav">
        <span class="title">网页聊天</span>
        <span class="spacer"></span>
        <a href="login.html">登录</a>
        <a href="register.html">注册</a>
    </div>
    <!-- 主窗口区 -->
    <div class="login-container">
        <div class="login-dialog">
            <h3>登录</h3>
            <div class="row">
                <span>用户名</span>
                <input type="text"  id="username">
            </div>
            <div class="row">
                <span>密码</span>
                <input type="password" id="password">
            </div>
            <div class="row">
                <button id = "submit">登录</button>
            </div>
        </div>

    </div>
    <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
    <script>
        let submitButton = document.querySelector("#submit");
        submitButton.onclick = function(){
            let username = document.querySelector('#username').value;
            let password = document.querySelector('#password').value;
            if(username == '' || password == ''){
                alert("当前输入的用户名或密码为空")
                return;
            }
            jQuery.ajax({
                url:"/login",
                type:"POST",
                data:{
                    username:username,
                    password:password
                },
                success:function(body){
                    if(body && body.userId > 0){
                        alert("登录成功");
                        location.assign("/client.html")
                    }else{
                        alert("登录失败!用户名或密码错误");
                    }
                }
            });
        }
    </script>
</body>
</html>